body {
    font-family: Arial, sans-serif;
    background-color: #f8f8f8;
    margin: 0;
    padding: 0;
}

header {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 80px;
    background-color: #007bff;
    color: #fff;
    font-size: 24px;
    font-weight: bold;
}

h1 {
    text-align: center;
    margin-top: 50px;
    color: #2c3e50;
    font-size: 36px;
}

.container {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: 50px;
}

.card {
    background-color: #fff;
    border-radius: 5px;
    box-shadow: 0 0 5px #aaa;
    width: 320px;
    padding: 20px;
    margin: 20px;
    transition: all 0.3s ease;
}

.card:hover {
    box-shadow: 0 0 15px #aaa;
    transform: translateY(-5px);
}

.card h2 {
    margin-bottom: 10px;
    font-size: 24px;
    color: #2c3e50;
}

.card pre {
    background-color: #f0f0f0;
    padding: 10px;
    font-size: 14px;
    border-radius: 5px;
    white-space: pre-wrap;
    word-wrap: break-word;
}

.button {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 20px;
}

button {
    font-family: Arial, sans-serif;
    font-size: 16px;
    font-weight: bold;
    color: #fff;
    background-color: #007bff;
    border: none;
    border-radius: 4px;
    padding: 10px 20px;
    cursor: pointer;
    transition: background-color 0.3s ease-in-out;
}

button:hover {
    background-color: #0056b3;
}
